Clevis.



N. A. NIEMIE.

OLEVIS.

APPLICATION FILED APR.

Patented Nov. 15, 1910.

WITNESSES:

ATTORNEYS NELS A. NIEMIE, OF MCKENZIE, NORTH DAKOTA.

CLEVIS.

9'75, 786. Specification of Letters Patent.

Application filed. April 6, 1910.

Patented Nov. 15, 1910. Serial No. 553,714.

To all whom it may concern:

Be it known that I, NELS A. NIEMIE, a citizen of the United States, and a resident of McKenzie, in the county of Burleigh and State of North Dakota, have invented a new and Improved Clevis, of which the following is a full, clear, and exact description.

y invention relates to clevises, particularly adapted for use 011 plows and like agrito engage the holes 23 for adjusting the length of the extension 22 outside of the clevy bar 21.

As shown in Figs. 1, 2 and 3, a suitable link is provided for connecting the clevis to a drawing member such as a horse or the like, and a similar link 26 is provided for connecting the other end of the clevis to a drawn member such as a plow or the like.

10 cultural implements, and has for an object to The frame 10 is provided on one side of provide an adjustable clevis for connection the same with a series of graduations 27 between a drawing and a drawn member, to adapted to correspond in value to the release the drawn member from the drawing strength of the spring 13 or the pull of the member'sho'uld the drawn member become rod 12.

15 caught in any manner so as to impede its The operation of my device is as follows: progress and place it in danger of breakage. Suppose the clevis is connected with a plow For the purpose mentioned, use is made of and a horse, and the horse is pulling the a frame provided with a spring-controlled plow over the ground in the regular manpull rod, a clevy bar mounted on the frame ner. Now suppose that the plow suddenly 20 and capable of adjustment, and a locking strikes a stone, and the horse is not strong plate secured to the pull rod and removably enough to dislodge the stone. The tremenengaged by the clevy bar, the said plate dous strength of the horse pulling against being adapted to slide on the frame. the stone ordinarily would tend to break Reference is to be had to the accompanythe harness or the plow, but my device he- 25 ing drawings forming a part of this specifiing attached to the plow in the manner cation, in which similar characters of refershown in F ig. l, the pull of the horse will ence indicate corresponding parts in all the disengage the plate 15 from the clevy bar views, and in which 21 and the clevy bar will spring to the posi:

Figure 1 is a side elevation of my clevis; tion shown in Fig. 4, thereby releasing the 30 Fig. 2 is a plan view of my clevis; Fig. 3 link 25 fromthe clevy bar, and disconnectis a sectional view taken on the line 33 in ing the plow and horse. Any strain is now Fig. 2, and showing the various parts in eliminated, and the stone can be either dug normal position, and Fig. 4 is a similar secaway or the plow lifted around it; when tional view, but showing the clevy bar retheplow and horse are quickly re-connected 35 leased from the locking plate. and the plowing resumed as heretofore men- Referring more particularly to the varitioned. ous views, I employ a. U-shaped casing 10 It will be understood that although I have having similar slots 11 therein, and mountshown and described a particular construced in the casing is a pull rod 12 controlled tion of my device, I do not limit myself 40 by a compression spring 13 encircling the thereto, the scope of my invention being rod 12. The spring 13 is held in position fully defined in the appended claims. by abutting against the end 14 of the casing, Having thus described my invention, I and a locking plate 15 held on the pull rod claim as-new and desire to secure by Letters 12 by the nut 16. The locking plate 15 Patent:

45 comprises outwardly-extending lugs 17 for 1. A clevis comprising a frame, a pull rod holding the plate on the frame so that it can on the frame, a clevy bar hingedly mounted slide in the slots 11, and an upwardly-proon the frame, a locking plate secured to the jecting lug 18 is provided on the plate 15 pull rod and adapted to slide on the frame, and has therein a hole 19. with the said clevy bar removably engaging 50 Transversely disposed through the casing the plate, and means on the clevy bar for at one end of the same is a pivot or hearing adjusting the same.

20 and hingedly mounted thereon is a clevy bar 21 provided with a slidable extension 22. A series of holes 23 are provided in-the extension 22, and mounted on the clevy bar 21 is a spring-controlled lever 24 adapted 2. A clevis comprising a frame, a pull rod on the frame, an adjustable clevy bar hingedly mounted on the frame, a locking plate secured to the pull rod and adapted to slide on the frame, with the said clevy bar removably engaging the plate, and spring-controlled means in the clevy bar for adjusting the length of the same.

3. A clevis comprising a U-shaped frame, a pull rod on the frame, a clevy bar hingedly mounted on the frame, a locking plate secured tothe pull rod and adapted to slide in the frame, With the said clevy bar removably engaging the plate, and springcontrolled means 011 the clevy bar for adjusting the length of the same.

at. A clevis comprising a U-shaped frame, a spring-controlled pull rod on the frame, a clevy bar hingedly mounted on the frame, a locking plate secured to the pull rod and adapted to slide on the frame, with the clevy bar removably engaging the plate, and means on the clevy bar for adjusting the same.

5. A clevis comprising a U-shaped frame, a spring-controlled pull rod on the frame, an adjustable clevy bar hingedly mounted on the frame, a locking plate secured to the pull rod and adapted to slide on the frame,

'With the clevy bar removably engaging the plate, and sprlng-controlled means on the clevy bar for adjusting the same.

6. A clevis comprising a slotted U-shaped frame, a spring-controlled pull rod on the frame, an adjustable clevy bar hingedly mounted on the frame, a locking plate secured to the pull rod and adapted to slide controlled'means on the clevy bar for ad justing the same.

7. A clevis comprising a double slotted U-shaped frame, a spring-controlled pull rod on the frame, an adjustable clevy bar hingedly mounted on the frame, a locking plate secured to the pull rod and adapted to slide on the frame, with the clevy bar removably engaging the plate, graduations on the frame, and spring-controlled means on the clevy bar for adjusting the same.

8. A clevls comprising a double slotted U-shaped frame, a sprlng-controlled pull rod on the frame, an adjustable clevy bar hingedly mounted on the frame, a locking plate on the pull rod and mounted to slide on the frame, lugs on the locking plate, graduations on the frame adapted to indicate the strength of the spring for the pull rod, and spring-controlled means on the clevy bar for manually adjusting the length of the same.

In testimony whereof I have signed my name to this specificationin the presence of tWo subscribing Witnesses.

NELS A. NIEHIE.

ISAAC KENNILA. 

